Solve for y
y=\frac{a}{100}
Solve for a
a=100y
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100y=a
The equation is in standard form.
\frac{100y}{100}=\frac{a}{100}
Divide both sides by 100.
y=\frac{a}{100}
Dividing by 100 undoes the multiplication by 100.
a=100y
Swap sides so that all variable terms are on the left hand side.
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